What's Going On?
Lionel's face was exceptionally pale. One couldn't call him either handsome or ugly, but simply average. Though, it was a bit difficult to tell if this was the best he could do, or if it was simply because he was malnourished.
With how sunken his cheeks were, it was clear that he had never had enough to eat. So, though he looked quite plain now, he may very well look different if he finally began to receive enough sustenance.
However, this wasn't the reason Leonel felt he looked nothing like him. The truth was that with Leonel's senses, it was quite easy for him to fill in Lionel's features and extrapolate how the latter would look. But, even then, they were nothing alike.